Transition region of nuclear vessel steels: Master curve approach using small punch notched specimens

  • Roberto Lacalle
  • , David Andrés
  • , José Alberto Álvarez
  • , Federico Gutiérrez-Solana

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

5 Citations (Scopus)

Abstract

The behaviour of the materials in ductile-brittle transition region must be known when performing structural integrity assessments of nuclear reactor vessels working under the effects of neutron irradiation. The characterisation of this region has been usually carried out by means of Charpy impact tests. Just during last few years new approaches based on direct fracture mechanics tests have begun to be used. In most of these cases, the Master Curve methodology, which allows the transition region to be characterised using only one parameter (T0 reference temperature), has been employed. In this paper the transition region of two materials -one vessel steel and one common structural steel-has been characterised by means of Small Punch Tests. First of all, this zone has been characterised using conventional specimens and the results were compared with those of Charpy impact tests. Finally a new approach based on the use of notched Small Punch samples together with Master Curve methodology has been proposed.

Original languageEnglish
Title of host publicationSmall Sample Test Technique
EditorsKaishu Guan, Karel Matocha, Tong Xu
PublisherTrans Tech Publications Ltd
Pages77-86
Number of pages10
ISBN (Print)9783035711066
DOIs
Publication statusPublished - 2017
Externally publishedYes
Event4th International Conference on Small Sample Test Technique, SSTT 2016 - Shanghai, China
Duration: 12 Oct 201614 Oct 2016

Publication series

NameKey Engineering Materials
Volume734 KEM
ISSN (Print)1013-9826
ISSN (Electronic)1662-9795

Conference

Conference4th International Conference on Small Sample Test Technique, SSTT 2016
Country/TerritoryChina
CityShanghai
Period12/10/1614/10/16

Keywords

  • Master Curve
  • Notched specimens
  • Small punch test
  • Transition region
  • Vessel steels

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